Casing for universal joints.



M. P. STUNEY, CASNG FOR UNIVEBSALJOINTS. APPLICATION FILED MAY 25. 191?.

MALCOLM R STONEY, 0F EHILADELPHIA. PENNSYLVANEA, ASSIGNOB lO POWELL Y EVNS, 0F PHILADELPHIA, PENNSYLVANIA.

Gesine rea UNIVERSAL Jornrs.

Application filed May 25, 1917.

To all whom t may concern:

Be it known that I, MALCOLM l). S'ronnr, a4 citizen of the United States, residing,T in Philadelphia, Pennsylvania, have invented a Casing for Universal Joints, ot which the following is a speciication.

@ne object of my invention is to provide a casing or cover for universal joints, particularly of the type described and claimed in the application for lll. S, Patent of Powell Evans, Serial No. 89,613, filed April 7, 1916, which shall be of such a construction as to permit of its being made by a comparatively small number of operations and therefore at a lower cost than has hitherto been the casu-the invention contemplating such an arrangement of parte as will permit of the utilization of comparatively inexpensive grades of sheet metal.

'A further object of the invention is to materially reduce the cost of the casing;` of a universal joint by providing a novel form ot' packing holding structure, particularly adapted for manufacture by a few comparatively simple stamping and Welding operations.

These objects and other advantageous ends I secure as hereinafter set forth, reference being had to the accompanying drawings, in which, j l

Figure 1 isa longitudinal'vertical section of a universal joint showing.,1r my invention as applied thereto;

Figs. 2 and 3 are respectively front and rear elevations of the outer casing member;

Fig. 4 is a vertical, longitudinal section on the line 4 4, Fig. 2; and y Figs. 5 and 6 are fragmentary sections showing modifications of my invention.

in the above d rawings 1 represents a shaft provided at one end with elongated teeth or integral keys 2 designated to lit into correspondingly formed slotsom' lteyways in a. sleeve 2 constitutingV one of theniembersof a universal joint ;the arrangement being-such that said shaft is free to move longitudinally".

Within said sleeve. The latter at one end is provided with lubricant-retaining packinnl 4 held in place against the shaft 1 and the adjacent end ol said sleeve by a washer Grand an inwardly flanged shell 5 threaded Specification o1" Letters atent.

Patented Nov9 211i, 1191"?,

Serial No. 170,943.

to the sleeve. The opposite end of the sleeve 2 is provided with two outwardly projecting trnnnions or integral pins 7, on `each of which is rotatably mounted a block or slide t5 whose'sides are plane and parallel. Moreover the outer surface of each slide is sphericall'v curved to permit it` to bodily move within a guideway 9 formed in the inner face. ot a cheek piece 1'0. Said two check pieces are preferably integral wlth an annular plale or liange 1l bolted to the flange l2 ol a sleeve l?) designed to be connected in any suitable nianner to a second shaft,

(not shown). Obviously the sleeve l is tree to swing on its trunnions 7 and the slidesn are likewise free to niove in the guides E) yabout a center which is intersected by the by the center line oi: the Shaft 1.

in order to exclude dust, grit, etc., from the interior ol' the above described universal joint, aswell as to retain solid or liquid lubricatilrhr material.therein, l provide a casing structure consistinpot two thin inc tal stampings or other suitably formed members 14 and 15, of which thelormer is yin the shape ot a cylinder outwardly langed at one end and provided with openings for the passage o'l thebolts 1G which clamp it to the plate 11 in addition to clampingr tbtel latter to the Flange 12.

The opposite end of the casing member 10 is inwardly curved to form part of a Sub stantially spherical surface and a limited portion of its circular edge is turned abruptly inward at an angle of Substantially 900 to the adjacent part thereof. The casing' member 15 is preiferably made in the form ot a part oi a spherical shell having a central opening,r around which it is outwardly flanged to closely fit the cylindrical surface of the, sleeve 2. This member 15 telescopes with or extends into the casing member 14- and in order to preventI the escape of lubricant between the inwardly turned edge 17 and the adjacent spherical sint-ace of the member 15, l provide an annular bodyhxpaeking 18, confined between said edge and airing 19 of angular section. One web or flange of'ihisring extends substantially parallel with but spa/ced away center line of said lrunnions and also i from the inwardly turned edge 17, while its other member is parallel with and electrically or otherwise welded to the inner surface of the curved portion of the casing member 14.

The annular body of packing 18 projects inwardly beyond the edges of the webs or flanges 17 and 19 to make liquid tight engagement with the curved member 15 which 1s at all times held in contact with said packing by a coil spring 20 mounted between it and a shoulder 21 on the sleeve 2. It is to be noted that the above form of the outer casing member 14 may be inexpensively and quickly made and that of comparatively inexpensive material since a minimum number of simple operations is required to bring it to the shape illustrated and provide it with the inwardly extending edge 17. Thereafter it is merely necessary to weld or otherwise attach the angular ring 19 within said member as shown and inount the packing ring'in the annular channel thus formed.

If desired, instead of bending the edge of the casing member 14 abruptly inward as indicated at 17, I may as shown in Fig. 5, leave said edge unaltered and weld or otherwise suitably fix to it a packing retaining ring 25 of U-shaped section, mounting in this an annular body of packing 18t1 in such position as to make a liquid-tight joint with the second casing member 15. If it should be found advisable or necessary to employ a second body of packing in order to better retain the lubricant in the casing, I mount such a packing body between one side of the ring 25 and a rin 19 of angular section of the construction s own in Figs. 1 and 4.

Obviously the same end may be secured by providing the outer casing member 14' with an inwardlyturnededge 17 as in Figs. 1 and 4, and thereafter welding or otherwise fixing to either member a second ring 26 of U-shaped section. One ring of packing may be confined between the Hangc or iii-turned edge '17 and one side ot' the ring 26 and a second body of packing .mounted within the channel provided by this latter ring so that both of said packing bodies engage the inner casing member.

I claim:-

1. A casing consisting of two telescoping parts of which one has a flange projecting toward the other; an annular rib fixed to said first part so as to project inwardly therefrom toward the other part and extend Substantially parallel to said flange; with an annular body of packing mounted in the space between the rib and flange and engaging the second part of the casing.

2. A casing consisting of two parts of which one extends over the other and has a flange projecting toward said second part; an annular rib of angular section having;v

one of its webs fixed to the first part and the other web projcctin toward the second part substantially paralel to said-flange; with packing mounted in the space betweenthe rib and flange and engaging the secondvpart of the casing.

3. A casing consisting of two spherically curved members of which one extends over the other and has a flange projecting toward it; a ring rigidly fixed to the inner surface of the first member and projecting toward the second member substantially parallel with the flange; with packing mounted in the annular space between said ring and the flange and slidably engaging the second member.

@The combination of a universal joint including two relatively movable members; a casing inclosing said joint and having two parts respectively mounted on said members, one part of the casing having an inwardly extending flange and provided with an inwardly projecting rib of angular section fixed to its inner surface so as to extend substantially parallel with said Harige; a body of packing confined in the space between the rib and flange. the second casing part being slidably mounted on the second of the universal joint members; and a spring acting on said second casing part. to maintain it in engagement with said body of packing.

5. The combination of two casing members of which one extends within the other; the outer member having a flange: an angular rib having one of its webs welded to the inner surface of the outer 'member and having its other web extending substantially parallel to the flange: with packing mounted between the flange and said rib in sliding engagement with the first of the casing members.

6. The combination of two telescoping casing members of which at least 'one is spherically curved: packing mounted between said members within the sphere' dened by said curved member; and means for holdingthe packing in place.

7. A casing consisting of two telescoping sections of which at least one has a snbstanu tially spherical curvature: with a packing retaining ring or rings projecting inwardly from the outer section within the sphere defined thereby: and Packing held by said ring or rings between the two casing sections.

8. A casing consisting of two telescoping sections of which at least one has a substantially spherical curvature; packing between th(` casing sections; and means for retaining said packing in place including a ring of U-shaped section fixed to one of the casing sections.

9. A casing consisting of two telescoping sections of' which at least one has a substantially spherical curvature; packing between the tw@ casing sections, one of sa secisfms having an inwardly projecing :annular rib; and means for retaining' sfl packing in piace including a ring of U-slmped section @Gauting Wh the annular rib.

10. casing consisting of two telescoping sections of which one has u Hnge pojecting owazrl @che other; with am annum? ring ma Bil-shape@ section xed co the inner sm'm@ o one o the casing secons adjacent the zmg'e; and a plumhty of rings of Packing held in position by the 'zmge and mug.

in witness whereof afx my signature. MALCOLM P. STONEY. 

